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Abstract:

A display device includes a display screen, at least one data interface,
and a processor. The display screen is configured for showing images. The
at least one data interface is configured for receiving image signal from
a computer. The processor includes a processing unit, a first power
source, and a second power source. The processing unit is configured for
checking whether the data interfaces receive image signals and inputting
the image signals into the display screen if the data interfaces receive
image signals. The first power source is configured for supplying power
to the processing unit continuously. The second power source is
configured for supplying power to the display screen when the processing
unit detects if the data interfaces receive image signals.

Claims:

1. A display device, comprising: a display screen configured for showing
images; at least one data interface configured for receiving image
signals from a computer; and a processor comprising: a processing unit
configured for checking if the data interfaces receive image signals and
inputting the image signals into the display screen if the data
interfaces receive image signals; a first power source configured for
continuously supplying power to the processing unit; and a second power
source configured for supplying power to the display screen when the
processing unit checks if the data interfaces receive image signals.

2. The display device as claimed in claim 1, wherein the display screen
is a liquid crystal display screen.

3. The display device as claimed in claim 1, wherein the first power
source is a battery.

4. The display device as claimed in claim 1, wherein the at least one
data interface is selected from a digital visual interface, a high
definition multimedia interface, and a video graphic array interface.

5. A display control method for a display device comprising a display
screen, at least one data interface, and a processor having a first power
source, a processing unit, and a second power source, the method
comprising: supplying power to the processing unit continuously; checking
if the at least one data interface receives an image signal or not;
wherein, if the at least one data interface receives an image signal,
powering the display screen on via the second power source and the
inputting image signal into the display screen to show an image; if the
at least one data interface does not receive an image signal, powering
the display screen off as the second power source is inactive.

6. A computer system, comprising: a computer; and a display device
electrically connected to the computer, comprising: a display screen
configured for showing images; at least one data interface configured for
receiving image signals from the computer; and a processor comprising: a
processing unit configured for checking if the data interfaces receive
image signals and inputting the image signals into the display screen if
the data interfaces receive image signals; a first power source
configured for continuously supplying power to the processing unit; and a
second power source configured for supplying power to the display screen
when the processing unit checks if the data interfaces receive image
signals.

7. The computer system as claimed in claim 6, wherein the display screen
is a liquid crystal display screen.

8. The computer system as claimed in claim 6, wherein the first power
source is a battery.

9. The computer system as claimed in claim 6, wherein the at least one
data interface is selected from a digital visual interface, a high
definition multimedia interface, and a video graphic array interface.

Description:

BACKGROUND

[0001] 1. Technical Field

[0002] The present disclosure relates to display technologies, and
particularly, to a display device and a display control method of the
display device.

[0003] 2. Description of Related Art

[0004] Many computer include a separate display device, which is
separately connected to a power source and so must be manually powered on
when the computer is powered on. Because of this, users may forget to
turn off the display device when they are done using the computer. This
wastes electricity.

[0005] Therefore, it is desirable to provide a display device and a
display control method of the display device, which can overcome or at
least alleviate the limitations described.

BRIEF DESCRIPTION OF THE DRAWINGS

[0006] FIG. 1 is a schematic view of a display device, according to a
first exemplary embodiment.

[0007] FIG. 2 is a functional block of the display device of FIG. 1.

[0008] FIG. 3 is a flowchart of a display control method of the display
device of FIG. 1, according to a second exemplary embodiment.

DETAILED DESCRIPTION

[0009] Referring to FIGS. 1-2, a display device 100, according to a first
exemplary embodiment, includes a display screen 10, a processor 20, and
data interfaces 40 inside the display screen 10. In this embodiment, the
display device 100 is a part of a computer system 300. The computer
system 300 includes a computer 200 electrically connected to the display
device 100.

[0010] The display screen 10 is configured for displaying images. In this
embodiment, the display screen 10 is a liquid crystal display (LCD)
screen.

[0011] The data interfaces 40 includes a digital visual interface, a high
definition multimedia interface, and a video graphic array interface. The
data interfaces 40 are configured for receiving image signals output from
the computer 200.

[0012] The processor 20 includes a processing unit 220, a first power
source 240, and a second power source 260.

[0013] The first power source 240 is electrically connected to the
processing unit 220. The first power source 240 is configured for
continuously supplying power to the processing unit 220. In this
embodiment, the first power source 240 is an internal battery of the
display device 100.

[0014] The second power source 260 is electrically connected to the
processing unit 220 and the display screen 10. The second power source
260 is configured for selectively supplying power to the display screen
10 in response to control of the processing unit 220.

[0015] The processing unit 220 is electrically connected to the data
interfaces 40 and the display screen 10. The processing unit 220 is
configured for checking whether the data interfaces 40 receive image
signals or not. If the data interfaces 40 receive image signals, the
processing unit 220 controls the second power source 260 to supply power
to the display screen 10 and input the image signals to the display
screen 10, thereby showing images on the display screen 10. If the data
interfaces 40 do not receive image signals, the processing unit 220 cuts
the second power source 260 off, thereby the display screen 10 is turned
off.

[0016] Referring to FIG. 3, a display control method can be implemented
by, for example, the display device 100 and includes steps S100 through
S110. In Step S100 power is supplied to the processing unit 220. In
particular, the first power source 240 continuously supplies power to the
processing unit 220. In Step S102 check if the data interfaces 40 receive
image signals or not. If the data interfaces 40 receive the image
signals, the method follows path P1 to implement Step S104, in which the
display screen 10 is powered on by the second power source 260 and the
image signals are input into the display screen 10 to show images. If the
data interfaces 40 do not receive the image signals, the method follows
path P2 to implement Step S106, in which the second power source 260 is
inactive, and the display screen 10 is turned off. During the display
control method, when the computer 200 is powered on, the data interfaces
40 receive the image signals; the display device 100 is automatically
powered on. When the computer 200 is powered off, the data interfaces 40
do not receive any image signals, the display device 100 is automatically
powered off to save energy. This is convenient and saves energy.

[0017] It is to be understood, however, that even though numerous
characteristics and advantages of the present embodiments have been set
forth in the foregoing description, together with details of the
structures and functions of the embodiments, the disclosure is
illustrative only, and changes may be made in detail, especially in
matters of shape, size, and arrangement of parts within the principles of
the disclosure to the full extent indicated by the broad general meaning
of the terms in which the appended claims are expressed.